One way delay (OWD) analysis

Delay analysis is usually done on Round Trip Times (RTT) because these don't need clock synchronization and are easy to retrieve. Deeper analysis implies looking at One Way Delays (OWD) or One Trip Time (OTT). OWD analysis requires clock to be synchronized/syntonized (up to the desired precision).

Mptcpanalyzer can plot OWDs under this condition, you need to pass to the program the server and the client pcaps.

The first step is to map the packets from one pcap to the other. Only then can we substract their sending time from their arrival time and plot the result.

> map_mptcp_connection examples/client_2_filtered.pcapng examples/client_2_filtered.pcapng 0
2 mapping(s) found
0 <-> 0.0 with score=inf  <-- should be a correct match
-tcp.stream 0: 10.0.0.1:33782  <-> 10.0.0.2:05201  (mptcpdest: Server) mapped to tcp.stream 0: 10.0.0.1:33782  <-> 10.0.0.2:05201  (mptcpdest: Server) with score=inf
-tcp.stream 2: 10.0.0.1:54595  <-> 11.0.0.2:05201  (mptcpdest: Server) mapped to tcp.stream 2: 10.0.0.1:54595  <-> 11.0.0.2:05201  (mptcpdest: Server) with score=inf
-tcp.stream 4: 11.0.0.1:59555  <-> 11.0.0.2:05201  (mptcpdest: Server) mapped to tcp.stream 4: 11.0.0.1:59555  <-> 11.0.0.2:05201  (mptcpdest: Server) with score=inf
-tcp.stream 6: 11.0.0.1:35589  <-> 10.0.0.2:05201  (mptcpdest: Server) mapped to tcp.stream 6: 11.0.0.1:35589  <-> 10.0.0.2:05201  (mptcpdest: Server) with score=inf
0 <-> 1.0 with score=0
-tcp.stream 0: 10.0.0.1:33782  <-> 10.0.0.2:05201  (mptcpdest: Server) mapped to tcp.stream 1: 10.0.0.1:33784  <-> 10.0.0.2:05201  (mptcpdest: Server) with score=30
-tcp.stream 2: 10.0.0.1:54595  <-> 11.0.0.2:05201  (mptcpdest: Server) mapped to tcp.stream 3: 10.0.0.1:57491  <-> 11.0.0.2:05201  (mptcpdest: Server) with score=30
-tcp.stream 4: 11.0.0.1:59555  <-> 11.0.0.2:05201  (mptcpdest: Server) mapped to tcp.stream 5: 11.0.0.1:50077  <-> 11.0.0.2:05201  (mptcpdest: Server) with score=30
-tcp.stream 6: 11.0.0.1:35589  <-> 10.0.0.2:05201  (mptcpdest: Server) mapped to tcp.stream 7: 11.0.0.1:50007  <-> 10.0.0.2:05201  (mptcpdest: Server) with score=30

plot owd tcp examples/client_2_filtered.pcapng 0 examples/server_2_filtered.pcapng 0 --display